Automatic valve mechanism.



No. 629,!76. Patented July l8, I899.

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AUTOMATIC VALVE MECHANISM.

(Appliution filed Inn. 25, 1899.)

flio llodel.)

INVENTOR ATTORNEYS.

mom-urns, WASHINGTON. D. c

UNITED STATES PATENT OFFICE.

ROBERTSCHLUMBERGER, or ALLEGHENY, 'PENNsYLvANIA, ASSIGNOR TO ALVIN s. KING, or sEwIoKLEY, PENNSYLVANIA.

AUTOMATICTVALVE MECHANISM.

' SPECIFICATION formingpart of Letters Patent No. 629,176, dated JulydS, 1e99,

' Application filed January 25,1899. Serialllo. 703.329. (No model.)

To all whom it mayconcern: I

Be it known that 1, ROBERT SCHLUMBERGER, a citizen of the UnitedStat-es of America, re-

' siding at Allegheny, in the county of Alle- A further object of my invention is to con-..

struct a valve of this character which will automatically cut off the flow of gas by the back pressure of the water or will automatically 'open the valve to allow of the flow of gas by the inward pressure of the water.

A further object of my invention is to construct a valve of this character by which the flow of gas is regulated automatically by the flow of the water. v v

My invention finally consists inthe novel combination and arrangement of parts hereinafter more fully described, andparticularly pointed out in the claims.

In describing the invention in detail reference is had'to the accompanying drawings, forminga part of this specification, wherein like numerals of reference indicate corresponding parts throughout theseveral views thereof, and in which- I Figure 1 is a vertical sectional view of my improved valve. Fig. 2 is a cross-sectional View of the upper piston-chamber. Fig. 3 is a'perspeotive view of the gas-valve, its stem, and water-valve. Fig. at is a side View of the valve-stein casing, showing a water-outlet arranged therein. Fig. 5 isa cross-sectional view of the valve-stem casing, showing ar ranged therein a water-outlet. Fig. 6 is a side view of the water-valve and a portion of the valve-stem. Fig. 7 isan inverted plan view of the water-valve. Fig. 8 is an invert+ ed perspective view of the cap for the upper piston-chamber.

Referring to the drawings by referencenumerals, 1 indicates a water piston or motor.

casing having formed integral on each side thereof interiorly-screw-threaded collars 2 3, which are adapted to receive an inlet-pipe 4 and a, feed-piped the inlet-pipe at being connected to a suitable source ofwater-supply, while the supply-pipe 5 is adapted to be connected to the water-heater. ends of these pipes are screw-threaded on their peripheries for the purpose of securing them in the collars 2 3, formed on'the side of the water piston or motor casing 1. The innor face of the valve-casing is provided with a shoulder, as at 6. This shoulder is formed by an annular flange, as shown. The bottom of the water piston or motor casing 1 on its inner face is provided with an up'wardly-extending "collar 7 to allow of the operation therethrough as well as to guide the valvestem' 8, and the lower face of the bottom of of the water-valve casing is also provided The inner with a-downwardly-extending collar 9, the

periphery thereof being screw-threaded for connecting thereto the valve-stem casing 10. The downwardly-extending collar 9 is bored, as shown, as well as the upwardly-extending collar 7 but the bore formed in the collar 9 is 06 greater diameter than the bore formed in the collar 7. This enlarged bore portion of the downwardly extending collar 9 is adapted to receive a packing means 11, which is held'in position bymeans of a nut 12.

The valve-casing 10 is provided with an enlarged annular recess, the inner face thereof screw-threaded for connecting the same, as heretofore stated, with the downwardly-extendin g collar 9. Registering with the enlarged recess is an elongated aperture through which the valve-stem passes. This aperture is of greater diameter in the lower portion of theval ve-stem casing tha n'in the upper portion. thereof, and this lower portion is adapted to receive a suitable packing, as at 14, which is held in position by means of a nut 15 in the same manner as the packingin the downwardly-extending collar 9. Thevalve-stem casing is cut away at its lower end, forming a shoulder, and screw-threaded, as shown, for the purpose of connecting thereto and making a neat fit at its connections of a gasvalve chamber 16. This gas-valve chamber is adapted to have secured thereto, as shown,

chamber 29 is apiston 31.

17 and an outlet-pipe 18. The gas-valve casing is provided with a valve-seat 19, formed on the partition-wall 20, which is arranged in the gas-valve casing, as shown.

Secured in any desirable manner at the lower end of the valve-stem 8 is a gas-valve 21. The valve-stem S is provided on its upper end with a head 22 for the purpose of connecting thereto a piston or motor 23. This water-valve is provided with an annular recess 24, which registers with the opening 25, through which the valve-stem passes. This recess is used to allow of the insertion of the valve-stem through the water-valve and for the entry of the valve-stem therein. The same is held in position by means of a setscrew 26, operating in the recess 2et. The lower part of the piston or motor 23is formed substantially octagon in shape, and the upper portion thereof is cut away, forming an annular groove, as at 27. The upper portion of this piston or motor is circular in shape, as at 28, the diameter thereof being such that this circular portion of the piston or motor will extend outwardly on all sides of the octagon-shaped portion or, in other words,forming an outwardly-exten ding ridge. For illustration see Fig. 1 of the drawings.

A portion of the inner face of the water piston or motor casing 1 is interiorly screwthreaded, as shown, which is adapted to receiveapiston-chamber29. Thispiston-chamher is provided with an annular flange 30, whichabuts against the upper edge of the water-valve casing. Operatin gin the piston- This piston operates apiston-rod 32, t-herebyestablishing communication between the piston 31 and the piston or motor 23, the piston-rod 32 being arranged within the downwardly-extending collar 33, formed integral with the lower end of the piston-chamber. The lower portion of the collar 33 has an enlarged recess formed therein to receive a suitable packing means 3a. This packing means is secured in position by means of a nut 35. 36 indicates a cap for the piston-chamber, having arranged on its inner face a stop 37 to limit the upward movement of the piston 31.

38 indicates an elongated opening or passage arranged in one side of the piston-chamber, which connects with the bottom proper by means of an inlet 39. The opening or passage 38 is to allow the back pressure of water to pass upwardly therethrough, thence into the piston-cham her, and to exertitself against the piston 31.

40 indicates an air-vent, arranged in the wall of the piston-chamber, as shown.

In order to allow of the discharge of water which may pass down through the upwardlyextending collar 7 and the downwardly-extending collar 9 toward the gas-valve casing, I provide a series of water-outlets 41 in the valve-stem casing, as shown. This allows the 1n discharge of water which may be carried the direction of the gas-valve casing.

The operation of my improved valve is as follows: The valves being in position,as shown in heavy lines in Fig. 1, the water is turned on and the pressure thereof operating against the piston or motor will raise the same to the position shown in dotted lines, at the same timeelevating the valve-stem and opening the gas-valve to allow of the flow of gas to the burner. The upward movement of the piston or motor will carry the loosely-mounted piston-rod 32 and elevate the piston 31 to the position shown in dotted lines. When the discharge of water from the water-heater is discontinued, the backward flow thereof will pass upwardly through the opening or passage 38 and exert itself against the upper face of the piston 31, thereby forcing the piston-rod 32 against the motor 23, causing the same to move downwardly, carrying the valvestem therewith, seating the gas-valve, there by cutting off the flow of gas.

It will be noted that various changes may be made in the details of construction without departing from the general spirit of my invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an automatic valve mechanism for water-heaters, the combination of a gas-valve ports, a valve operating therein, a piston or motor casin g connected to the gas-valve chamber, water inlet and outlet openings for said piston or motor casing, a piston or motor arranged in the said casing, connections between the said piston or motor and gas-valve, a piston-chamber connected to the said piston or motor casing, a piston arranged in said piston-chamber, a passage arranged in the casing of the said piston-chamber for establishing communication between the same and the interior of the piston or motor casing, and a piston-rod arranged between the said piston and piston or'motor for transmitting motion to the same, substantially as set forth.

2. In an automatic valve mechanism for water-heaters, the combination of a gas-valve casing provided with a valve, a piston or motor casing, water inlet and outlet openings therefor, a piston or motor arranged between the said openings, means for transmitting motion from the piston or motor to the valve in the gas-valve casing, a piston-chamber, a piston therein, means for transmitting motion between the two pistons, and a suitable communication being provided between the water-conduit on the outlet side of the piston or motor and the piston-chamber at the farther end thereof, substantially as set forth.

In testimonywhereof I affix my signature in the presence of two witnesses.

ROBERT SCHLUMBERGER.

W'itnesses:

H. O. EVERT, H. H. PATTERSON.

chamber having suitable inlet and outlet ICC 

